a b/recommendation-engine/src/main/java/eu/alfred/personalization_manager/model/HistoricalEntryCategories.java 

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package eu.alfred.personalization_manager.model;






  
  

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public enum HistoricalEntryCategories {






  
  

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  EVENTS_PARTICIPATED,






  
  

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  EVENTS_DENIED,






  
  

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  EVENTS_SEARCHED,






  
  

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  GAMES_PLAYED,






  
  

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  GAMES_DENIED,






  
  

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  GAMES_SEARCHED,






  
  

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  APPS_INSTALLED,






  
  

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  APPS_UNINSTALLED,






  
  

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  CONTACTS_SOCIALIZED_WITH,






  
  

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}